<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>localStorage</title>
</head>
<body>
    <!-- 页面关闭存储的信息会消失 -->
    <h1>localStorage</h1>
    <button onclick="saveData()">点我保存一个数据</button>
    <button onclick="readData()">点我读取一个数据</button>
    <button onclick="deleteData()">点我删除一个数据</button>
    <button onclick="clearData()">点我清空数据</button>
    <script>
        let person={
            name:'zsj',
            age:18
        }
        function saveData(){
            localStorage.setItem('msg','hello')
            localStorage.setItem('number',666)
            localStorage.setItem('person',JSON.stringify(person))
        }
        function readData(){
            const a=localStorage.getItem('person')  
            console.log(JSON.parse(a));
            //console.log(localStorage.getItem('p'));
        }
        function deleteData(){
           localStorage.removeItem('number')
        }
        function clearData(){
          localStorage.clear()
        }
    </script>
</body>
</html>